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Finding the Fourth Proportional to 129,231, 193,844.16 and 70,440.84

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Solution

The fourth proportional to 129,231, 193,844.16 and 70,440.84 is: 105,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,231 : 193,844.16 = 70,440.84 : x
  2. Step 2: Convert to fraction form
    129,231/193,844.16 = 70,440.84/x
  3. Step 3: Cross multiply
    129,231x = 193,844.16 × 70,440.84
  4. Step 4: Simplify right side
    129,231x = 13,654,545,459.49
  5. Step 5: Solve for x
    x = 13,654,545,459.49/129,231
  6. Step 6: Final answer
    x = 105,659.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.